Mining machine



Nov. 23,1943. R. K. JEFFREY ETAL 2,334,772

MINING MACHINE Original Filed May 6, 1938 q 55 f/VVf/VTOPi' I QQBEQT K. JEFFQEY AND Lawns E. MITCHELL, DECEASED.

fir ElQHAQD D. NxcfioLs, Anmmlswrzmora.

i atented Nov. 23, 1943 Robert K. Jeflreyj b'olumbus 0hio,fand -Ljewis E." r I 7 Mitchell; deceaseihlate of C01umbus,'0hio,' by Richard- D. Nichols, administrator; -Columbus,"

Ohio, assigliors to The Jeflrey v Company, a corporation 01" Ohio:

Manufacturing Original application 'May 6,1938, serial Nol i- 206,448. Divided and this apl lication June 19, f

1 1941, Serial No, 398,788 {I warms-5; organs);- *1

This invention irelate's to a mining machine and particularly to the construction of the main or truck frame, and as'sociatedhydraulic motor 7 means for swinging a turntable."

V An object of' the invention isto provide loan improved main or truck-frame for a mining machinewhichis of rugged construction andwhich incorporates as a rigid'or integral part thereof hydraulic motor means for swinging the turntab1e.-- p Another object ofithejinventionis to provide rugged but s simple 1 hydraulic motor, mechanism for swinging a turntable ofa mining machine.

truck 45 comprises a niaimframe formed V which extend i transversely A further object of the invention is to provide 7 a mining machinewith an'improved truck or main frame and associated hydra'ulic motor, 7 means for swinging the turnta blej which is: com} V pact in arrangement"; 1*; I"

invention will appear 1 Other objects of' the hereinaftezythe novel features and combina tions being set forth in the appended claims;

This application is adivisi on of our applica-ih tion Serial No. 206,448, filed May 6,1938, for an improvement in Mining "machines, which maturedinto Patent No.2,263,779, November-.25;

fl'n 'the accompanying: drawing,

chine we hestru u e t im m: tion; I

ing machinewith parts shownlin section}? an Fig; 3 it mechanism for connecting a piston rod of 'draulic mctor to an operating rack. a In Fig. 1 of the drawing there is illustrated diagrammatically a, mining machine which in corporates the structure forming the 'Subject-' matter of the inventiomhereinclaimed. The mining machine is disclosedinfulldetail in our parent application above identified, of which this application is a division, and some attempt will be made to describe it in detail except asito those- ;plan' View showinga mining' m Fig. 2 is a'plan View of the truck of said is an enlarged sectional. view of the 1 7 attached together to form a frame for theftruckflfigf Said main frame is supk' -portec lupona forward axle "5| "andarar axle 152,? which axle-5| iis slidablyf journaled in :ad-

-jour naljbearings 56, V provided with appropriatedriving and supportfby longitudinally extending frame members 46,16 whichfare laterallyspaced-apart and between v extending forward plate 4-? and transversely extending V rearward '7 plate iii and" intermediate transversely extendi- 'ingbolster members 49 and 59. All of'said main frame members tii'to 56; inclusiva are rigidly strongbody or main justable journal-boxes 53, 53 which maybe longi itudinally adjusted by adjusting screwsfl, 54 to adjust the tension of the driving chaim To assure movement'ofthe axle 5| parallelism, the adjustingscrews 54,5! 'gether by chain and are connected to rotate tosproeket mechanism 55.

the niain frame of the truck 45 by appropriate 56; The axles 5i and 52 are ing tr'ack engaging flanged wheels 51, all of which are keyedto respectiveaxlesil and 52. The axles 5| and 52 are connected toro'tate in-uni-' fsonfbychain"and 'sprocketmech anismiii. It is I evideht ftliat any'driving, force supplied to axle e2 win-be transmitted to 11 foil r" of the wheels 51,*therebyinsuring a manimum of "trac 1 non for propemng the :niining machine; which V is'fparticjularly' desirable during 'sumping: opera tions.-@ r

, 'trackless mine roomi parts forming the subject-matterherein-claimed Said mining machine includes a tru'ckJlE which supports a turntable H on which ismoun'ted foradjustmentin a vertical plane a} supplementary irame'liwwhich hasa, forwardlyextending neck hi9 carrying a turnover. head mechanism I59 which provides: for various adjustments of kerf cutting mechanism lent from and supported'by the truck is a plat-'- form 545 whichcarries a'considerable-' ainount of mechanism which per se is not-pertinent to the invention herein claimed.

throughthe center which is attached 'to'said turntable and which 50 Extending rearwardly p -lt islet course, evident'th'at the flangedlwheel s Sir-are adapted to ride upon rails'in amine either for transporting. the inining 'machine irom one place to another; or for supporting saidzmining machine while performing ainining operation. While we'preferthis track mounted type of truck, said truckmay be mounted in any other desired manner, as upon endless tr ads; to operate in a; In T addition to those elements above described, thetruck '45 also includes a top plate 10 which is rigidly attached to the frame members 45; A]; 48, 49' andi fill. The turntable His mountedfiupon the truck for {swingingf movement in a horizontal plane oraboutfran upright axis which passes of a casting 'orpedf t iffi extends downwardly through a, central opening infsaid j mai n frame seen 'ill fFig 2 .of the gdrawjv 3 ing'. To p'rovideforswihging movement "oigth'e,

v turntable "ll-about its upright" axis with respect tothe truck 45, the lower portion of the casting 15 is provided with a pairoi spaced integral gears 1 a be ng" Qfma'in fr nct n ris he ea con ent 19 with which co-operate a pair of racks 80 and SI having spaced top and bottom teeth. This construction provides for very large bearing area between the gears 19 and racks 80 and 8|, which is particularly useful to. transmit turning move.- ment tofthe' turntable II when a machine is making a. horizontal arcuate out. 1

To apply turning 'movement to said turntable H through'the racks 80 and 8!, said racks 80 and" 8| are connected to hydraulicpiston motorssl -Qbviouslythose skilled in the art may make and 83,respectively, the structures oi. which are similar and thus a description 'of-rnot'or; 83 will I apply to both. Said motorB-igompriscs a der 84 formed as an integral pa ;of one I the. 'frame members 46 and supplied with a removable cylinder head 85. Within the cylinde 84 is.

a piston 86 provided withfapr'ir'opriatfi 131512011151. rings and rigidly attached to' a piston rod 81 5 which extends through the bottom of the cylinder 84 and is provided with a fluid tight stuffing box a Whi himlud san xt rna l h aded bu ne ermine b h, mo 332 6 9 t e same fi ma in a sin l a tin Serves a 19- a n o e ames tha em ase as a portion A5; and the cylinders are re-en- 3 (fed y 'be nefiepn t d to e h r an h fr'a e, memb was par i l 'a a angement le wa far a r e as evinced... i wh l ese vesfs ac wh ch is al a s. @PQXk lidreilch j mi ii i a iinewhleh mustbe a e ates e ati e W an ea. P me amine i mete .82 .18 id co nect b lst m m ra n 50 6h be ls is t d fil n ra ev n ng-in i l a -a e "ei t nds- V,

"I ,orderf'to efiect a co fnection between the -piston rod:fi'ifandthe rack 8|, totr ansrnitthe ford he m o s-3- t me ma d. r k: i. an et't b r nt' h l t al. hrl e s, on ma esm t ed t he i ton red 81; new? 86 i t eme- 9: 3; W

r de ab e! e rl ef new to be es r 'flis Prov ded w th a. 99. 8?

r ads- .a 91-,-

ete al-r ad d i sq ar fare-"engineerstime on the rack 8|wi when. y, a hearin r 5.8 and lace t I-ihe at 1; fi Q urse. ndrtqod hat .l a' crematio n v decl. between. he

l nap ih en t n r d. f; m tor 8.

, .11 2? h dr uli piston mcte slliandiaaem.- JQYQCUQ Wi l. u n able ll re a iv Mlle teale9 1 rucki amea Tbisqnera iqn. b

performed either whilethelgert cutter; Hill, tin a riaomalke gwh s it s bein mes Z t ut. an ne Qt, ser s, Th compa t e 1. 'r et iiihe y r u c otqrs Miami; 8;. es pl sumaam nimuni f a elcem 51s ltwi i e atmwen By; mi athe wande s e .m to s-i te ment; he t k 1011 of space'jb'ut thereis also a conservation of; re "1 t demb d m ii 9 t n ent on wh re achineismounted upon wheels {5] it is de; e ha he hy rau ic m t r fl za di ef xe a afie whicht sCarr e b an e x is eetnerov ea n r tend laterally of the center line of the mining machine and preferably, as illustrated, between the forward and rearward pair of spaced-apart traction means. However, Where other types of traction means; such as endless-crawlers, are employed; it is evident that other'arrangements may be made while preserving at least some of the advantageous features of our invention, such' as the'integral or rigid construction of the hydraulic motors with the truck or main frame.

' ,va;-iou p an ia the details and arrangement [of parts without departing from the spirit and ;be restricted to the precise construction herein A imi fiistjatpf ojfrae rem-re of,-Lewist'l5. Mitchell;

; Hav n scope of the invention as defined by the claims 7 hereto appended, and we therefore wish 'not to disclosed,

by'Letters Patent of the United States is:

. 1l ,I n a-mining machine, the combination'with amain frame, of;a turntable mounted on said 7 frame for adjustment about an upright axis, a. pinion carried by said turntable, a rack meshing with s aid pinion, a hydraulic piston 'motor for o erating said rack, and means loosely connecting',said. rack and piston motor constructed and arrangedito. prevent any lateral thrust on said rack'beir 'g :{ransferred to the piston motor.

2. ,In' a mining machine, the combination with a main frame, of aturntable mounted on said ra e. res em a ou an up i is. a inin' carried by said turntable, a rack. meshing with said. pinion, a hydraulic piston motorfor operating said. rack, and means loosely connect:

ing said rack and piston motor; constructed; and 7 arranged to prevent. anyflateralthrust on said rack being transferred to vthepistonmotor and including cooper'atingteeth on said rack and the p I piston'rod of. sanimaer' formed of difierentsize to permit, relative'radial movement While pr'eventing relative longitudinal movement.

"3; mining machine including a mainframe; traction-means for said main frame formoving it rectilifiearly, a turntable mounted above said main name for swinging movement, said main frame including parts. rigidl-y attached. together and forming a. central'o'pening, said turntable f h g an, operating pedestal. extending downs J .wai'dli through said opening, mechanismposi tinned. within said, opening for swinging .said

pedestaL andL' motor means for operating said mechantsmiincludingv a partformed integralwith ajr ember of: said; main frame which exten 7 across one side of saidbgyehihg and rigidly a tachesspaced parts of said main frame onopposite sides or said opening, saidv member being onstruc ed-t0 cnnstitute part-11f said maimframez.

4;. A main. framefor a..-mining machine; comaprising rigidly; attached members, means con:- nected hereto adapted tO IQCBiVBttIaCtlOD means tor the; main lframa. said attached 'frame men'nbersbeine; fanned to; provideat central opening: danteclctozreceive adownwardly extending ped+ estal of; a;turnt able;/ said main-zrramezinoludlng a's.-...a part thereof memben connecting othen memberann; opno iteisidemf :saim opening; which sa-i member; includesaasran integralpartithereof:

7 tlifusidescribed and shown an embodiment of our invention, what we desire to secure 

